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380 GREASE TRAPS AND CONVERTERS
• Standards: In accordance with BS EN 1825-1 and to BS EN 1825-2 and Kitemark or
Agrément certified.
• Manufacturer: as CDM Partnership performance sepcification.
- Product reference: as CDM Partnership performance sepcification.
• Accessories:
- Enzyme dosing control unit;
- Filters; and
- Lid.

385 MASKING PLATES
• Manufacturer: Contractor's choice.
- Product reference: Contractor's choice.
• Material and finish: Plastics, self finish.
• Fixing: Integral clamping screws.

EXECUTION

601 INSTALLATION GENERALLY
• Standard: To BS EN 12056-5.
• Components: From the same manufacturer for each type of pipework.
• Electrolytic corrosion: Avoid contact between dissimilar metals where corrosion
may occur.
• Plastics and galvanized steel pipes: Do not bend.
• Allowance for thermal and building movement: Provide and maintain clearance
as fixing and jointing proceeds.
• Concealed or inaccessible surfaces: Decorate before starting work specified in this
section.
• Protection:
- Purpose made temporary caps: Fit to prevent ingress of debris.
- Access covers, cleaning eyes and blanking plates: Fit as the work proceeds.

605 PIPE ROUTES
• General: The shortest practical, with as few bends as possible.
- Bends in wet portion of soil stacks: Not permitted.
- Routes not shown on drawings: Submit proposals before commencing work.

610 FIXING PIPEWORK
• Pipework: Fix securely plumb and/ or true to line. Fix discharge stack pipes at or
close below socket collar or coupling.
• Branches and low gradient sections: Fix with uniform and adequate falls to drain
efficiently.
• Externally socketed pipes and fittings: Fix with sockets facing upstream.
• Additional supports: Provide as necessary to support junctions and changes in
direction.
• Vertical pipes: Provide a load bearing support not less than every storey level.
Tighten fixings as work proceeds so that every storey is self supporting.
• Wall and floor penetrations: Isolate pipework from structure, e.g. with pipe sleeves.
- Masking plates: Fix at penetrations if visible in the finished work.
• Expansion joint sockets: Fix rigidly to the building.
• Fixings: Allow the pipe to slide.

RotF generic (intermediate) NBS 2014 6118-AEW-XX-XX-NBS-A-01